CN103079718A - Food waste digestion system - Google Patents
Food waste digestion system Download PDFInfo
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- CN103079718A CN103079718A CN2011800411145A CN201180041114A CN103079718A CN 103079718 A CN103079718 A CN 103079718A CN 2011800411145 A CN2011800411145 A CN 2011800411145A CN 201180041114 A CN201180041114 A CN 201180041114A CN 103079718 A CN103079718 A CN 103079718A
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- 238000012545 processing Methods 0.000 claims abstract description 51
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/02—Apparatus for the manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/10—Addition or removal of substances other than water or air to or from the material during the treatment
- C05F17/15—Addition or removal of substances other than water or air to or from the material during the treatment the material being gas
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/957—Apparatus therefor using two or more serially arranged devices
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/58—Reaction vessels connected in series or in parallel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- General Chemical & Material Sciences (AREA)
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- Clinical Laboratory Science (AREA)
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- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Tropical Medicine & Parasitology (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A waste digestion system including a primary digester and one or more first subsequent digesters for processing non-liquid organic waste material without the addition of external heat using thermophilic aerobic bacteria to produce a stable product, said digesters being configured to contain contents including the waste material, each of said digesters further including mixing means configured to mix the contents of that digester with feed air drawn through the contents during processing in such a way as to maintain essentially aerobic conditions within the digester; such that the waste material is first processed in the primary digester before a proportion of the contents of the primary digester are transferred to at least one first subsequent digester where further processing occurs; if the first subsequent digester completes the processing then it is a final subsequent digester.
Description
Technical field
The present invention relates to refuse digestive system and method, more specifically relate to the refuse digestive system for food waste, although use the thermophilic aerobic bacteria can process other debirs stream.
Background technology
Be not to admit likewise known or form the part of the common practise of this area of this kind prior art to any discussion of prior art in this manual.
Food waste is processed with all multi-method that is not quite similar traditionally, for example Direct-fed domestic animal and decompose with anaerobic at the landfill site landfill.These methods have some problems, the disease that the domestic animal of for example undressed food waste being fed can cause entering food chain.Landfill site needs large-area soil, although some landfill points are collected the gas (being commonly considered as bad, because they are counted as " greenhouse gases ") that reaction produces, many landfill points can not be collected gas.
Decompose some relevant problems in order to overcome with landfill food waste anaerobic, bar buttress compost has become commonly used.Bar buttress compost has reduced the anaerobic of food waste and has decomposed, but usually can not eliminate the anaerobic decomposition of food waste fully.Bar buttress compost has many problems, particularly when carrying out on a large scale.Having adopted a lot of technology to overcome these problems, but had some problems not overcome fully for bar buttress compost, these problems comprise-
● need relatively large-area soil.
● odour nuisance, insect and insect infestation may be arranged.
● the nutrient loss as leachate may be arranged, and leachate also can be thought pollutant.
● can not keep fully or fully control the condition in the whole digestion process.
For bar buttress compost, handled material and/or use the purposes of resulting product to be restricted because remain with pathogen in the end-product.These pathogen can be processed by further processing and eliminate, but this has increased cost and/or processing time.
Bar is cut processing and can be proceeded for as little as and 4 weeks finished digestion, but representational be time of 3 to 6 months.The processing time of this length occupies the time that large-area soil reaches the obvious long stage.
The how possible problem that bar is cut digestion be possible in resulting product residual too much moisture.This moisture can mix removal by drying or with other material, but this can increase cost.If do not remove moisture, then moisture can cause storage problem, health risk (for example infection with legionella is relevant with moist compost) and increase cost of transportation that increase is relevant with use or treatment product.
Exist and manyly can overcome the container composting technology that bar is cut the relevant many difficulties of compost.But the plant that they are difficult to process the high protein material and are practically limited to have the food waste that accounts at the most small scale.Although these systems are very fast, the processing time remains several weeks, rather than a couple of days.
Digestive system based on container usually produces end-product wet or tide, and this can need special distribution or send out resource in order to end-product is turned back in farmland and the gardens.Some systems produce dry product, but they use external heat source therefore to increase processing cost.
Some systems are mixed pending material with the oar in the container or blade, this has sizable cost of energy, because there is friction between mixing arm and content.
The present invention is devoted to reduce or eliminate as above to be given prominence to existing more methodical or whole defectives.
Summary of the invention
The invention provides the refuse digestive system, comprise elementary digester and one or more first level digester, be used for using the thermophilic aerobic bacteria to process the on-liquid organic waste materials in the situation that do not add outside heat, produce stable product, described digester configures to hold the content that comprises waste material, described digester also comprises mixing arrangement, and described mixing arrangement is configured the air supply of the content of this digester and the content of flowing through in processing procedure is mixed to keep in the digester basically the mode of aerobic conditions; So that waste material is at first processed at elementary digester, a part of content of elementary digester is transferred at least one first level digester and is further processed afterwards, if first level digester finished processing, then it is whole last level digester.
Preferably, after described or each first level digester, has the second subprime digester, the content that first level digester transfer comes from the upstream is further processed in described second subprime digester configuration, and when the second subprime digester was finished processing, then it was whole last level digester.
In highly preferred form, the other secondary digester that after described or each second subprime digester, has one or more series connection, the content that secondary digester transfer comes from the upstream is further processed in described other secondary digester configuration, when second or other secondary digester finish when processing, then it is whole last level digester.
Preferably, the content in each secondary digester is frangible.
Preferably, described or each whole last level digester configures to finish waste disposal.Preferably, each whole last level digester configures to produce dry product, and any extra drying of unnecessary use.Preferably, processing is carried out between 60 ℃ and 70 ℃.
In highly preferred form, between one or more digester that directly adjoins, has reducing mechanism.Preferably, each reducing mechanism can be by independent control.
Preferably, the protein content of waste material is high.
Preferably, the thermophilic aerobic bacteria is the natural part of organic waste materials.In highly preferred form, add the thermophilic aerobic bacteria.In preferred form, the thermophilic aerobic bacteria that adds is bacillus subtilis (bacillus subtilis) or similar at natural one or more bacterial strains that have bacterium of higher temperature.
Preferably, each digester is the basically combination of columniform, conical or these shapes, with mixing arrangement, described mixing arrangement comprises the batten that at least one links to each other with described digester inner surface, so that the plane of described or each described batten is perpendicular to its inner surface that links to each other, wherein said or each batten is arranged with continuous or discontinuous spiral or crooked route along at least part of length of inner surface.
Preferably, the refuse digestive system comprises wet scrubber, and described wet scrubber configuration will contact to form spend scrub stream from the air-flow that digester extracts with Fluid Contacting.Preferably, Fluid Contacting is selected from the Fluid Contacting of following acidifying Fluid Contacting, alkaline Fluid Contacting, solvent-based Fluid Contacting, non-solvent base Fluid Contacting, preparation Fluid Contacting and combination, wherein prepares Fluid Contacting and is configured to extract, dissolve and/or neutralize from airborne nitrogen compound and the sulphur compound of digester extraction.Preferably, spend scrub stream is righ nitrogen liquid.Preferably spend scrub stream is neutral basically.
Preferably, the refuse digestive system comprises heat exchanger, and described heat exchanger arrangement is basically dry with the warm and humid air-flow that extracts from each digester, produces dry gas stream and condensate.Preferably, heat exchanger arrangement is separated a part of dry air and it is mixed the cold air supply of generation with fresh air.Preferably, heat exchanger arrangement is reclaimed heat from warm and humid gas, and before it is turned back to each digester, uses the air supply of its heats cold.
In highly preferred form, condensate is system's product.In a preferred form, further condensate is processed isolate or form the concentrate that is rich in the plant growth stimulating thing.
The present invention also provides the method for using the refuse digestive system, comprises the following steps:
A. supplying with waste material and filling expects in the elementary digester with the active colony of thermophilic aerobic bacteria;
B. in elementary digester, waste material is stirred and aeration;
C. add waste material and inserts;
D. when elementary digester is full of, a part of content is transferred in first level digester, and in all digesters, continues to process;
E. extract warm and humid air and it is delivered to heat exchanger and condensation product liquid from digester;
F. in first level digester, continue to add material until be full of;
G. in first level digester the contents processing thing until finish;
H. discharge stable product from first level digester.
But the present invention also comprises the system of selection of using the refuse digestive system, comprises the following steps:
A. supplying with waste material and filling expects in the elementary digester with the active colony of thermophilic aerobic bacteria;
B. in elementary digester, waste material is stirred and aeration;
C. add waste material and inserts;
D. when elementary digester is full of, a part of content is transferred in first level digester, and in two digesters, continues to process;
D1. when first level digester is full of, a part of content is transferred in the second subprime digester, and in all digesters, continues to process;
If D2. there is another secondary digester, then when the second subprime digester is full of, a part is transferred in another secondary digester, and in all digesters, continues to process;
G1. in whole last level digester the contents processing thing until finish;
H1. discharge stable product from whole last level digester.
Preferably, when carrying out, arbitrary step of H1 carries out step e 1 in steps A,
E1. extract warm and humid air and it is delivered to wet scrubber to produce spend scrub stream from digester.
Preferably, stable product is dry friable material.
Preferably, in less than 48 hours, waste disposal is become stable product.Very preferably process between 24 hours and 48 hours.
Description of drawings
Only by the mode of example, describe the preferred embodiments of the invention in detail with reference to accompanying drawing below, in the accompanying drawings:
Fig. 1 is refuse digestive system schematic diagram;
Fig. 2 is the second embodiment schematic diagram of refuse digestive system;
Fig. 3 is the flow chart of method that uses the refuse digestive system of the first or second embodiment;
Fig. 4 is refuse digestive system the 3rd embodiment schematic diagram;
Fig. 5 is the flow chart of method that uses the refuse digestive system of the 3rd embodiment.
Best mode for carrying out the invention
Processing relates to the thermophilic aerobic bacteria decomposes the microorganism of waste stream, sometimes is called thermophilic aerobic sigestion (TAD).Pending waste stream can be any debirs, but usually is rich in food waste.The system that has been found that is successfully used to process the high protein refuse especially.Keep pH and the water capacity of processed material by standard approach (adding entry, pH modifier), therefore no longer discuss in detail.Processing is being carried out between 60 ℃ and 70 ℃ and between pH about 8 and 9, although this depends on employed bacterial isolates really, and may suitably exceed these scopes.
The target that should be noted that processing is that potential tedious debirs (this can comprise some organic polymer, for example synthetic plastic) are changed into such form, and the nutrients that wherein comprises can be used as fertilizer and turns back in the soil.Described processing produces friable material, and if fully dry it will can not support further microbial activity.Product is dried to the demand which kind of degree depends on the terminal use.
Processing has been eliminated basically all pathogen of initial existence in the debirs and has been produced stable product.Wherein stable product is a kind of like this product, and wherein the debirs of most of input stream has been broken down into organic even matrix.Processing can stay the material of for example larger bone, and it will be separated and decompose to be used for further processing.Processing can produce the physical dryness material but some application may require frangible product moist or semi-humid.
Should be noted that the many debirs from the food preparing mechanism comprise pollutant, for example glass and metal object, for example cutter and fork, these can be avoided processed and be separated in processing procedure or after finishing dealing with.
Described system can be installed in the TEU (Twenty-foot Equivalent Unit) of the hole that provides suitable and facility, obtains the refuse digestive system of compact portable formula, perhaps is assembled into independently fixing/semi-stationary devices.
Before method, examine in further detail system closely, with reference to figure 1, shown to comprise elementary digester (2) the refuse digestive system (1) for the treatment of waste material (6) of first level digester (3) and heat exchanger (4).The digestion of waste material (6) begins in elementary digester (2) and finishes in first level digester (3), and produces at least two kinds of product streams, i.e. product liquid (7) stream and stable product (8) stream.
Each digester (2,3) that does not show in detail is can be along the cylindrical or conical tube of central shaft rotation.In a preferred form, each digester (2,3) comprises the one or more longitudinal arrangement helical flights that are connected to tube inner surface, and described helical flight configures in use the content in the described cylinder is stirred and aeration.These helical flights can part along or extend along the whole length of cylinder, and depend on that related materials can be continuous or discontinuous.In operating process, can in digester (2,3), keep small negative pressure so that the release of gaseous effluent stench or harmful drops to minimum or eliminates.This small negative pressure air amount flows through in the material of processing, rather than blow out air flows through, and this has eliminated potential air pollution effectively.Each digester (2,3) in use by known means such as but not limited to, belt transmission system, chain drive system, guide wheel, direct-drive, indirect drive or its combination around its central shaft rotation.
In the processing procedure from the heat loss of digester (2,3) enough low so that prevent from existing in the described digester (2,3) many, if not all, moisture condenses at inwall.In order to make the further minimum heat losses from digester (2,3), can make double shells or otherwise insulation (by any any means known).
In the digestion process process, produce warm and humid air (11), be extracted from this warm and humid air (11) of each digester (2,3), and through over-heat-exchanger (4), form condensate (12) and dry air (13) in this condensate moisture.Part dry air (13) is extracted and the filter of flowing through (14) does not have the major part of condensation (if not all) VOC to be extracted in the heat exchanger (4).Then will purify air (15) be discharged in the atmosphere.In order to substitute dry air (13) volume that is discharged in the atmosphere, be drawn into fresh air (16) in the heat exchanger (4) and join and form the air supply (17) of supplying with digester (2,3) in the dry air of remainder.Before supplying with in the digester (2,3), air supply (17) is heated.Preferably, then warm and humid air (11) cooling that heat exchanger (4) will be inputted uses the heat of extracting that air supply (17) is heated.Heat exchanger (4) is or comprises the heat-exchanging part of Known designs, and it can be the air-air heat exchanger of platelet heat exchangers, shell and tube heat exchanger, cross-current, reverse flow or concurrent or similar form, liquid-air heat exchanger.Adding fresh air (16) helps to replenish the oxygen that bacterium consumes to air supply (17).
Filter (14) is carbon filter at present, but it can be filtration or the treating apparatus that can remove any type of VOC.In one embodiment, VOC is burned.If the use carbon filter, then waste active carbon (spent carbon) (18) can mix with stable product (8) or be back in one or more digesters (2,3).
With reference to figure 2, show the second embodiment of refuse digestive system (1).This embodiment is included in filter (14) wet scrubber (30) before to reduce the load on the filter (14).Dry air (13) in this second embodiment is through the wet scrubber (30) of known type (for example spray column, board-like film, filling film, venturi film or falling liquid film).
Contact liq (for the liquid that contacts with dry gas (13)) used in wet scrubber (30) can be Acidic Liquid or acidifying solution, but can be fresh water equally, and this depends on the pollutant that exists in the dry air (13).The preferred acidic Fluid Contacting is because remaining pollutant generally includes the ammoniation of ammonia and/or solubility.After dry air (13) was washed, it was discharged as air (31) after processing, and carries out final purification through filter (14), then is discharged in the atmosphere as purify air (15).Fluid Contacting under predetermined pollutant levels, when the scheduled time or under some other standard, is discharged wet scrubber (30) as spend scrub stream (32) when contaminated thing is saturated.This spend scrub stream (32) flows for generation of second liquid product (33).Have been found that second liquid product (33) flows independent or mixes with fluid product (7) stream is useful accessory substance.
Wet scrubber (30) can comprise demister or be intended to reduce Fluid Contacting carry enter process after other devices of air (31), these devices then are well-known if present and are types.
With reference to figure 3, for the clear method of using refuse digestive system (1) that shows in a flowchart.Flow process comprises the following steps:
A. supply with waste material (6) and inserts (20) in the elementary digester (2) with the active colony of thermophilic aerobic bacteria;
B. in elementary digester (2), waste material is stirred and aeration;
C. add waste material (6) and inserts (20);
D. when elementary digester (2) when being full of, a part of content is transferred in first level digester (3), and in all digesters (2,3), continues to process;
E. extract warm and humid air (11) and it is delivered to heat exchanger (4) and condensation product liquid (12) from digester (2,3);
F. in first level digester (3), continue to add material until be full of;
G. in first level digester (3) the contents processing thing until finish;
H. discharge stable product (8) from first level digester (3).
In steps A, elementary digester (2) has been in active state, and has aerobic (TA) bacterium of one or more thermophilic of stablizing population and waste material (6) fresh and/or part digestion.Along with the progress of digestion, more waste materials (6) for example food waste add together with inserts (20).Add inserts (20) with the content of keeping digester (2,3) under suitable physical state, content need to flow freely and be frangible, for air supply (17) provides enough surface area to keep the aerobic treatment condition.Material for example dried sawdust, waste paper, to be rich in cellulosic adjusting material with the cardboard of crossing or similar organic drying suitable to inserts (20), can be useless activated carbon (18) as inserts.If do not provide enough surface areas to air supply (17), then digest slack-off.The material that only is suitable as composition in the final stable product (8) just can be used as inserts (20).These materials certainly also can be digested, and this depends on their granular size more or less.
For the content that makes elementary digester (2) is started from scratch to this activated state, with a small amount of material of being rich in one or more desirable TA bacteriums together with for example bean dregs (okara), the palm kernel extract of getting wet or similarly substrate join together in the elementary digester (2).Regulate pH for the TA bacterium of selecting, and begin digestion.Along with the rising of temperature, add more substrate, regulate air stream and digest agglomerate increasing to the more or less level of self―sustaining that digests.The beginning of this process can be carried out in less container, then transfers them in the elementary digester (2) when content has suitable activity.
In step B, elementary digester (2) continues to process waste material, and wherein elementary digester (2) is stirred/mix to keep the large exposed surface area to air supply (17) along its axle rotation and content.
In step C, add more waste material (6) and/or inserts (20) to keep content as free-pouring and frangible state, provide the surface area of abundance to keep the aerobic treatment condition to air supply (17).Have been found that if helical flight is discontinuous, rather than pass through the single helical flight of digester total length, then improve the performance of digester.
When elementary digester (2) when being full of, then carry out step D.In step D, a part of content is transferred in empty first level digester (3).This transfer can realize by any known way, but auger and/or suction are a kind of methods with counter-rotating that elementary digester (2) combines.The content that has been found that transfer about 50% is suitable ratio, but this depends on relative size and the content situation of digester (2,3).Transfer between elementary digester (2) and first level digester (3) can realize by any suitable means that keep institute's transferring content thing activity.Should be noted that to have more than one first level digester (3) and partial content thing can transfer in the middle of them each.In elementary digester (2) and first level digester (3), continue now to process.
When carrying out, other treatment step carries out step e.In step e, warm and humid air (11) extracts from described or each digester (2,3) and treats to be processed by heat exchanger (4).In heat exchanger (4), by with warm and humid air (11) cooling, water and some or whole condensable organic/inorganic compositions are condensed and form condensate (12) and dry air (13).The dry air of definite part (13) is released and through filter (14), is carbon filter in this example, to remove any VOC, is discharged in the atmosphere thereby will purify air.Remaining dry air (13) is supplied with digester (2,3) with fresh air (16) in conjunction with the air supply (17) that forms requirement, and the oxygen of additional TA bacterium use.The air supply (17) of cooling is heated and turns back in the digester (2,3) with the temperature of needs.In preferred system, heat exchanger (4) serves as heat recovery units; Then it turn back to warm and humid air (11) cooling in the cold air supply (17) with this heat, will drop to the demand of extra heating source minimum.Although this recuperation of heat configuration is preferred, if environmental condition needs, can add extra heat.
In step G, will join from the more material of elementary digester (2) in ready described or each first level digester (3), until one or more first level digester (3) are in the level that needs.Then, any first level digester (3) continues to finish the processing of this digester (3) content with the level of needs.When finishing dealing with, remaining stable product (8), this stable product (8) can be according to circumstances not need further dry state, but stable product (8) is bioclean friable material basically.During this end, managed the end, in described or each first level digester (3), the operator is by adding inserts (20) or water, regulate pH, adjusting air supply (17) or any other relevant treatment variable are kept the condition in this first level digester (3).The adjusting meeting of doing changes because of the operator, because the waste material of processing has high complexity and variable character.Consider the variable properties of waste material, specific bacteria colony in each digester (2,3) may be different, can not inflexible formulation keep the required concrete adjusting of optimal treatment condition, and experienced operator can rule of thumb carry out the adjusting that needs.
In step H, stable product (8) is discharged from first the level digester (3) that produces it, and if necessary, first level digester (3) can be used for further processing.
The stable product (8) that produces is suitable to fertilizer.
Have been found that product liquid (7) is the liquid growth stimulant of plant, and therefore can also pack and sell as independent product.To have been found that recently condensate (12) comprises the certain plants growth stimulant astoundingly; This arrives less than expecting, because do not report before this.Think by condensate (12) is further processed, can separate or concentrated at least these plant growth stimulating things.
Although not yet study, possible extra plant growth stimulating thing or other valuable accessory substance if present, can extract or catch by filter (14) or wet scrubber (30).If situation is like this, can process saturated filtering material and/or spend scrub stream (32) (if present), to extract these.
Described process need 24 hours to 48 hours is processed into useful solid product (8) with waste material (6), and if true(-)running, then before packing, do not need further drying from the product that first level digester (3) discharged.
With reference to figure 4, show the 3rd preferred embodiment of the present invention, in this embodiment, each first level digester (3) connects a second subprime digester (40) afterwards.Randomly, these second subprime digesters (40) can connect other secondary digester (41) afterwards successively.
This has formed the parallel chain of series of secondary reactor (3,40,41), and this has improved processing selecting.
Each digester (2,3,40,41) that does not show in detail is can be along the columniform or conical cylinder of central shaft rotation.In a preferred form, each digester (2,3,40,41) comprises the helical flight of one or more longitudinal arrangements that link to each other with tube inner surface, and helical flight is configured in use the content in the described cylinder be stirred and aeration.These helical flights can part along or extend along the whole length of cylinder, and depend on that related materials can be continuous or discontinuous.In operating process, can in digester (2,3,40,41), keep small negative pressure so that the release of gaseous effluent stench or harmful drops to minimum or eliminates.Each digester (2,3,40,41) in use by known means such as but not limited to, belt transmission system, chain drive system, guide wheel, direct-drive, indirect drive or its combination around its central shaft rotation.
In the processing procedure from the heat loss of digester (2,3,40,41) enough low so that prevent from existing in the described digester (2,3) many, if not all, moisture condenses at inwall.In order to make the further minimum heat losses from digester (2,3,40,41), can make double shells or otherwise insulation (by any any means known).
In this embodiment, at each digester (2,3,40,41) the warm and humid gas (11) that produces in is fed directly in the wet scrubber (30), this contact with Fluid Contacting with some or all ammonia, amine, contain ammonia/nitrogen compound and other pollutant is removed from warm and humid gas (11).Preferably, Fluid Contacting is acid to improve extraction efficiency.Wet scrubber (30) can be any known single or multistage type (for example spray column, board-like film, filling film, venturi film or falling liquid film).Wet scrubber (30) can allow the circulation of warm and humid gas (17) or Fluid Contacting through many times to improve the extraction to these materials.Spend scrub stream (32) flows out also packaged through wet scrubber (30), perhaps pack as second liquid product stream (33) after further processing.Warm and humid gas (11) leaves wet scrubber as purify air (31), because it is the saturated air of temperature, the carbon dioxide load that usually has increase, described purifying air can as the air feed in greenhouse, can be cooled to extract heat or extra byproduct or other purpose.
Although the preferred acidic Fluid Contacting, it can be water, acid Fluid Contacting, alkaline Fluid Contacting, solvent-based Fluid Contacting or composite contact liquid equally, through the extraction of the useful accessory substance of design optimization.
In the 3rd embodiment, can exist reducing mechanism (45) to decompose the larger material from front digester (2,3,40,41), to keep best exposed surface area between the digester of connection (2,3,40,41) adjoining.This optimum size be material and the processing stage dependent, be difficult to explication.
Whole last level digester (3,40,41) is finished processing, and discharges dry friable material when finishing, and it can directly be packed becomes stable product (8), perhaps is combined with other materials to form stable product (8).
With reference to figure 5, for purpose clearly, show in a flowchart the method for the refuse digestive system (1) that uses the 3rd embodiment.Method comprises the following steps:
A. supply with waste material (6) and inserts (20) in the elementary digester (2) with the active colony of thermophilic aerobic bacteria;
B. in elementary digester (2), waste material is stirred and aeration;
C. add waste material (6) and inserts (20);
D. when elementary digester (2) when being full of, a part of content is transferred in first level digester (3), and in two digesters (2,3), continues to process;
D1. when first level digester (3) when being full of, a part of content is transferred in the second subprime digester (40), and in all digesters (2,3,40), continues to process;
If D2. there is another secondary digester (41), then when second subprime digester (40) when being full of, a part is transferred in another secondary digester (41), and in all digesters (2,3,40,41), continues to process;
E1. extract warm and humid air (11) and it is delivered to wet scrubber (30) to produce spend scrub stream (32) from digester (2,3,40,41);
G1. at the interior contents processing thing of whole last level digester (40,41) until finish;
H1. discharge stable product (8) from whole last level digester (40,41).
In steps A, elementary digester (2) has been in active state, and has aerobic (TA) bacterium of one or more thermophilic of stablizing population and waste material (6) fresh and/or part digestion.Along with the progress of digestion, more waste materials (6) for example food waste add together with inserts (20).Add inserts (20) with the content of keeping digester (2,3) under suitable physical state, content need to flow freely and be frangible, for air supply (17) provides enough surface area to keep the aerobic treatment condition.Material for example dried sawdust, waste paper, to be rich in cellulosic adjustment material with the cardboard of crossing or similar organic drying suitable to inserts (20), can be useless activated carbon (18) as inserts.If do not provide enough surface areas to air supply (17), then digest slack-off.The material that only is suitable as composition in the final stable product (8) just can be used as inserts (20).These materials certainly also can be digested, and this depends on their granular size more or less.
For the content that makes elementary digester (2) is started from scratch to this activated state, to be rich in a small amount of material of one or more desirable TA bacteriums together with substrate bean dregs (okara) for example, the palm kernel extract of getting wet or similarly substrate join together in the elementary digester (2).Regulate pH for the TA bacterium of selecting, and begin digestion.Along with the rising of temperature, add more substrate, regulate air stream and digest agglomerate increasing to the more or less level of self―sustaining that digests.The beginning of this process can be carried out in less container, then transfers them in the elementary digester (2) when content has suitable activity.
In step B, elementary digester (2) continues to process waste material, and wherein elementary digester (2) is stirred/mix to keep the large exposed surface area to air supply (17) along its axle rotation and content.
In step C, add more waste material (6) and/or inserts (20) to keep content as free-pouring and frangible state, provide the surface area of abundance to keep the aerobic treatment condition to air supply (17).Have been found that if helical flight is discontinuous, rather than pass through the single helical flight of digester total length, then improve the performance of digester.
When elementary digester (2) when being full of, then carry out step D.In step D, a part of content is transferred in empty first level digester (3).This transfer can realize by any known way, but auger and/or suction are a kind of methods with counter-rotating that elementary digester (2) combines.The content that has been found that transfer about 50% is suitable ratio, but this depends on relative size and the content situation of digester (2,3).Transfer between elementary digester (2) and first level digester (3) can realize by any suitable means that keep institute's transferring content thing activity.Should be noted that to have more than one first level digester (3) and partial content thing can transfer in the middle of them each.In elementary digester (2) and first level digester (3), continue now to process.
When first level digester is full of, then carry out step D1.In step D1, a part of content of first level digester (3) is transferred in the empty second subprime digester (40).This transfer can realize by any known way, but auger and/or suction are a kind of methods with counter-rotating that first level digester (3) combine.The content that has been found that transfer about 50% is suitable ratio, but this depends on relative size and the content situation of digester (3,40).Transfer between first level digester (2) and second subprime digester (40) can realize by any suitable means that keep institute's transferring content thing activity.In all digesters (2,3,40), continue now to process.
When there being other secondary digester (41), and second subprime digester (40) is then carried out optional step D2 when being full of.In step D2, a part of content of second subprime digester (41) is transferred in the empty other secondary digester (41).This transfer can realize by any known way, but auger and/or suction are a kind of methods with counter-rotating that second subprime digester (40) combines.The content that has been found that transfer about 50% is suitable ratio, but this depends on relative size and the content situation of digester (40,41).Transfer between second subprime digester (2) and other secondary digester (41) can realize by any suitable means that keep institute's transferring content thing activity.In all digesters (2,3,40,41), continue now to process.
When carrying out, carries out other treatment step step e 1.In step e 1, warm and humid air (11) extracts from each digester (2,3,40,41) and treats to be processed by wet scrubber (30).In wet scrubber (30), the warm and humid air (11) of extraction contacts with acid Fluid Contacting, and described Fluid Contacting neutralization and extraction are from the multiple pollutant of damp-warm syndrome air (11).Modal pollutant is ammonia, ammoniation and amine in the damp-warm syndrome air (11), and they are transformed into soluble-salt as the part of washing process.Warm and humid air (11) and/or wet scrubber (30) acidifying Fluid Contacting can many times separate to improve around wet scrubber (30) circulation.Should be noted that term wet scrubber (30) is intended to contain expection and will flows interior any gas liquid contact device from composition elution to the liquid of air-flow.Fluid Contacting under predetermined pollutant levels, when the scheduled time or under some other standards, is discharged wet scrubber (30) as spend scrub stream (32) when contaminated thing is saturated.This spend scrub stream (32) flows for generation of second liquid product (33).Air (31) is discharged wet scrubber (30) and can be used for many purposes after processing.Although it is preferred should be noted that this step, because it obtains further valuable product, it is optional.
In step G1, except whole last level digester (40,41) outside, the more material of self-digestion device (2,3,40) joins the secondary digester (3 of ready back in the future, 40,41) in, until one or more whole last level digesters (40,41) are in the level that needs.Then, any whole last level digester (40,41) continues to finish the processing of this last level digester at end (40,41) content with the level of needs.Full-time when handling, remaining stable product (8), if proper operation of first level digester (3), then this stable product (8) does not need further drying.During this end, managed the end, in described or each first level digester (3), the operator is by adding inserts (20) or water, regulate pH, adjusting air supply (17) or any other relevant state-variable are kept the condition in this first level digester (3).The adjusting meeting of doing changes because of the operator, because the waste material of processing has high complexity and variable character.Consider the variable properties of waste material, specific bacteria colony in each digester (2,3) may be different, and institute thinks that keeping the particular adjustments that optimal treatment condition carries out can not rigidly indiscriminately imitate, and experienced operator can rule of thumb carry out the adjusting of needs.
In step H, stable product (8) is discharged from the whole last level digester (40,41) that produces it, and whole last level digester (40,41) can be used for further processing as required.
Described process need 24 hours to 48 hours is processed into useful stable product (8) with waste material (6).If true(-)running, whole last level digester (3,40,41) can produce stable product (8), and this stable product (8) need not further drying and just can pack.
Should be noted that bone and shell (if present) and in fact similar mineral material, the pulverizing that can in processing procedure, be separated, and then be added back in the digester (2,3,40,41).
Another embodiment can be discharged VOC simply and is used for burning or directly be discharged into atmosphere.
An embodiment allows to add as required heat or small recuperation of heat again.
Another embodiment uses the VOC burning that extra heat is provided as required.
In an embodiment again, all dry airs (13) are discharged through filter (14), and in this case, air supply (17) is made of the fresh air (16) after the heating fully.When the volatility organic loading of the oxygen demand of digester (2,3) or warm and humid air (11) needed, it is essential that this situation is only; Although this may be just owing to other reason but the situation of expectation.
In an embodiment again, heat exchanger (4) in fact can be two physically separated heat exchangers, and one is heated condensate (12) condensation and another with cold air supply (17).
In a preferred form, each digester (2,3) has and the shape similar such as the concrete mixer bucket that is used in about 7 cubic meters capacity on the concrete truck.The length limited of digester (2,3) is in the suitable mixing of the entire contents of keeping digester (2,3) and the needs of aeration.
In one embodiment, employed thermophilic aerobic bacteria is naturally occurring bacterium in the charging.
In the embodiment of selecting, the thermophilic aerobic bacteria is bacillus subtilis or similar natural one or more bacterial strains that have bacterium under higher temperature.
When using term waste material (6) or inserts (20), be intended to contain through adding to produce bottle opener (starter) or keeping any material that digests in desired state.
The meaning refers to that air does not have pressurized process waste material when term is flowed through with " gas of the digester of flowing through " relevant use.
Therefore refuse digestive system of the present invention comprises two stage at least digestion, and wherein only a part of content shifted between the stage, and this has kept the activity in every one-phase, and need not to inoculate bacterium.Have the single phase I, it can supply the follow-up phase of one or more parallel chains.This means, in case system moves, begin immediately the decomposition of refuse organic material in the time of in being incorporated into the first digester, this has eliminated the demand to external heat.
Claims (28)
1. refuse digestive system, it comprises elementary digester and one or more first level digester, described refuse digestive system is used for not using the thermophilic aerobic bacteria to process the on-liquid organic waste materials in the situation that add external heat, produce stable product, described digester configures to hold the content that comprises waste material, each described digester further comprises mixing arrangement, and the air supply of described mixing arrangement configuration content that this digester is interior and the content of flowing through in processing procedure mixes to keep in the digester basically the mode of aerobic conditions; So that waste material is at first processed in elementary digester, a part of content of elementary digester is transferred at least one first level digester afterwards, is further processed at this; If first time the level digester has been finished processing, then it is whole last level digester.
2. refuse digestive system claimed in claim 1, it is characterized in that after described or each first level digester, having the second subprime digester, the content of first level digester transfer from the upstream is further processed in the configuration of second subprime digester, when the second subprime digester was finished processing, then it was whole last level digester.
3. refuse digestive system claimed in claim 2, it is characterized in that after described or each second subprime digester, having the other secondary digester of one or more series connection, described other secondary digester configures and processes further the content that secondary digester shifts from the upstream, when second or other secondary digester finish when processing, then it is whole last level digester.
4. each described refuse digestive system of aforementioned claim is characterized in that the content in each secondary digester is frangible.
5. each described refuse digestive system of aforementioned claim is characterized in that each whole last level digester configures to produce desciccate and the extra drying that need not any necessity.
6. each described refuse digestive system of aforementioned claim is characterized in that processing and carries out between 60 ℃ and 70 ℃.
7. each described refuse digestive system of aforementioned claim is characterized in that between one or more digester that directly adjoins reducing mechanism being arranged.
8. refuse digestive system claimed in claim 7 is characterized in that each reducing mechanism can be by independent control.
9. each described refuse digestive system of aforementioned claim is characterized in that protein content is high in the waste material.
10. each described refuse digestive system of aforementioned claim is characterized in that the thermophilic aerobic bacteria is the natural part of organic waste materials.
11. each described refuse digestive system of aforementioned claim is characterized in that the thermophilic aerobic bacteria adds.
12. each described refuse digestive system of aforementioned claim is characterized in that the thermophilic aerobic bacteria is bacillus subtilis or similar at natural one or more bacterial strains that have bacterium of higher temperature.
13. each described refuse digestive system of aforementioned claim, it is characterized in that each digester is the basically combination of columniform, conical or these shapes, described mixing arrangement comprises the batten that at least one links to each other with described digester inner surface, so that the plane of described or each described batten is perpendicular to its inner surface that links to each other, wherein said or each batten is arranged with continuous or discontinuous spiral or crooked route along at least part of length of inner surface.
14. each described refuse digestive system of aforementioned claim is characterized in that the refuse digestive system comprises wet scrubber, described wet scrubber configuration will contact to form spend scrub stream from the air-flow that one or more digester extracts with Fluid Contacting.
15. refuse digestive system as claimed in claim 14, it is characterized in that Fluid Contacting is selected from following: the Fluid Contacting of acidifying Fluid Contacting, alkaline Fluid Contacting, solvent-based Fluid Contacting, non-solvent base Fluid Contacting, preparation Fluid Contacting and combination, wherein prepare Fluid Contacting and configure to extract, dissolve and/or neutralize from airborne nitrogen compound and the sulphur compound of digester extraction.
16. the described refuse digestive system of claims 14 or 15 is characterized in that described spend scrub stream is nitrogen-rich liquid.
17. each described refuse digestive system in the claim 14 to 16 is characterized in that described spend scrub stream is neutral basically.
18. each described refuse digestive system of aforementioned claim, it is characterized in that described refuse digestive system comprises heat exchanger, described heat exchanger arrangement is basically dry with the warm and humid air-flow that extracts from one or more digesters, produces dry gas stream and condensate.
19. the described refuse digestive system of claim 18 is characterized in that described heat exchanger arrangement separates a part of dry air and it is mixed to produce cold air supply with fresh air.
20. claim 18 or 19 described refuse digestive systems is characterized in that described heat exchanger arrangement comes from the warm and humid air flow recovery heat that extracts, and used the air supply of its heats cold before it are turned back to each digester.
21. each described refuse digestive system in the claim 18 to 20 is characterized in that condensate is the product of this system.
22. each described refuse digestive system in the claim 18 to 21 is characterized in that further condensate being processed to separate or form the concentrate that is rich in the plant growth stimulating thing.
23. use the method such as each described refuse digestive system in the claim 1 to 22, comprise the following steps:
A. supplying with waste material and filling expects in the elementary digester with the active colony of thermophilic aerobic bacteria;
B. in elementary digester, waste material is stirred and aeration;
C. add waste material and inserts;
D. when elementary digester is full of, a part of content is transferred in first level digester, and in all digesters, continues to process;
E. extract warm and humid air and it is delivered to heat exchanger and condensation product liquid from digester;
F. in first level digester, continue to add material until be full of;
G. in first level digester the contents processing thing until finish;
H. discharge stable product from first level digester.
24. use the method such as each described refuse digestive system in the claim 1 to 23, comprise the following steps:
A. supplying with waste material and filling expects in the elementary digester with the active colony of thermophilic aerobic bacteria;
B. in elementary digester, waste material is stirred and aeration;
C. add waste material and inserts;
D. when elementary digester is full of, a part of content is transferred in first level digester, and in two digesters, continues to process;
D1. when the first elementary digester is full of, a part of content is transferred in the second subprime digester, and in all digesters, continues to process;
If D2. there is other secondary digester, then when the second subprime digester is full of, a part is transferred in the other secondary digester, and in all digesters, continues to process;
G1. in whole last level digester the contents processing thing until finish;
H1. discharge stable product from whole last level digester.
25. the method for use refuse digestive system as claimed in claim 24 is characterized in that carrying out step e 1 in steps A when any one is carried out to H1,
E1. extract warm and humid air and it is delivered to wet scrubber to produce spend scrub stream from digester.
26. each described method in the claim 23 to 25 is characterized in that stable product is dry friable material.
27. each described method in the claim 23 to 26 is characterized in that in less than 48 hours waste disposal being become stable product.
28. each described method in the claim 23 to 27 is characterized in that in 48 hours waste disposal being become stable product at 24 hours.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ586690 | 2010-07-08 | ||
| NZ58669010 | 2010-07-08 | ||
| PCT/IB2011/053038 WO2012004767A1 (en) | 2010-07-08 | 2011-07-08 | Food waste digestion system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103079718A true CN103079718A (en) | 2013-05-01 |
| CN103079718B CN103079718B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201180041114.5A Active CN103079718B (en) | 2010-07-08 | 2011-07-08 | food waste digestion system |
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| Country | Link |
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| US (1) | US20130089918A1 (en) |
| CN (1) | CN103079718B (en) |
| AU (1) | AU2011275366B2 (en) |
| SG (1) | SG186469A1 (en) |
| WO (1) | WO2012004767A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016022198A1 (en) * | 2014-08-05 | 2016-02-11 | Biogreen 360, Inc. | Organic waste digester system |
| USD1027351S1 (en) | 2016-03-09 | 2024-05-14 | Whirlpool Corporation | Food recycler |
| US9895726B1 (en) | 2016-07-27 | 2018-02-20 | Whirlpool Corporation | Method for cleaning a food waste recycling bin of a food waste recycling appliance |
| US10000429B2 (en) | 2016-03-09 | 2018-06-19 | Whirlpool Corporation | Method and apparatus for operating a composter device |
| NL2021128B1 (en) * | 2018-06-15 | 2019-12-20 | Eco Habitat B V | Process to bacterially decompose organic waste |
| WO2022250749A1 (en) | 2021-05-27 | 2022-12-01 | Biogreen 360, Inc. | Organic waste management system |
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| US4292328A (en) * | 1978-08-21 | 1981-09-29 | Coulthard T Lionel | Thermophilic aerobic digestion process for producing animal nutrients and other digested products |
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| CN1834066A (en) * | 2006-04-04 | 2006-09-20 | 上海联业生物技术有限公司 | Biological orgamic fertilizer and prepn thereof |
| CN101139231A (en) * | 2006-09-08 | 2008-03-12 | 中国科学院过程工程研究所 | Method for preparing organic composite fertilizer by micro-wave pretreatment of solid organic waste material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6071740A (en) * | 1998-09-18 | 2000-06-06 | Kerouac; Paul E. | Vessel composting process and apparatus |
| AU2411900A (en) * | 1999-01-12 | 2000-08-01 | Paul Kerouac | In vessel composting process and apparatus |
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2011
- 2011-07-08 WO PCT/IB2011/053038 patent/WO2012004767A1/en active Application Filing
- 2011-07-08 SG SG2012095774A patent/SG186469A1/en unknown
- 2011-07-08 CN CN201180041114.5A patent/CN103079718B/en active Active
- 2011-07-08 US US13/805,636 patent/US20130089918A1/en not_active Abandoned
- 2011-07-08 AU AU2011275366A patent/AU2011275366B2/en active Active
Patent Citations (10)
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|---|---|---|---|---|
| US4292328A (en) * | 1978-08-21 | 1981-09-29 | Coulthard T Lionel | Thermophilic aerobic digestion process for producing animal nutrients and other digested products |
| US4277342A (en) * | 1979-10-01 | 1981-07-07 | Cornell Research Foundation, Inc. | Combined biological-chemical detoxification of organics |
| US5587320A (en) * | 1993-11-01 | 1996-12-24 | Hitachi, Ltd. | Solid organic waste processing apparatus |
| US5496730A (en) * | 1993-12-01 | 1996-03-05 | Kabushiki Kaisha Toyodynam | Organic waste recycling apparatus |
| US6123747A (en) * | 1997-10-13 | 2000-09-26 | Hyundai Engineering Co., Ltd. | Apparatus and method for manufacturing barnyard manure using sewage and sludge |
| US20050199028A1 (en) * | 2002-03-20 | 2005-09-15 | Dae-Kyun Shin | Municipal solid waste treatment method and apparatus |
| CN1712386A (en) * | 2004-06-14 | 2005-12-28 | 宁波杉杉环保发展有限公司 | High-temperature aerobic fermentation of organic refuse material |
| US6966983B1 (en) * | 2004-10-01 | 2005-11-22 | Mixing And Mass Transfer Technologies, Llc | Continuous multistage thermophilic aerobic sludge digestion system |
| CN1834066A (en) * | 2006-04-04 | 2006-09-20 | 上海联业生物技术有限公司 | Biological orgamic fertilizer and prepn thereof |
| CN101139231A (en) * | 2006-09-08 | 2008-03-12 | 中国科学院过程工程研究所 | Method for preparing organic composite fertilizer by micro-wave pretreatment of solid organic waste material |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012004767A1 (en) | 2012-01-12 |
| SG186469A1 (en) | 2013-02-28 |
| AU2011275366A1 (en) | 2013-02-28 |
| US20130089918A1 (en) | 2013-04-11 |
| AU2011275366B2 (en) | 2014-09-11 |
| CN103079718B (en) | 2016-02-24 |
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